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2559 lines
78 KiB
2559 lines
78 KiB
/*++
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Copyright (c) 1997-1999 Microsoft Corporation
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Module Name:
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ds.c
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Abstract:
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WMI data provider registration code
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Author:
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AlanWar
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Environment:
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Kernel Mode
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Revision History:
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--*/
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#include "wmikmp.h"
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void WmipEnableCollectionForNewGuid(
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LPGUID Guid,
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PBINSTANCESET InstanceSet
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);
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void WmipDisableCollectionForRemovedGuid(
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LPGUID Guid,
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PBINSTANCESET InstanceSet
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);
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VOID
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WmipSaveTraceGuidMap(
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LPGUID Guid,
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PBINSTANCESET ControlInstanceSet
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);
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ULONG WmipDetermineInstanceBaseIndex(
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LPGUID Guid,
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PWCHAR BaseName,
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ULONG InstanceCount
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);
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ULONG WmipMangleInstanceName(
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LPGUID Guid,
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PWCHAR Name,
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ULONG MaxMangledNameLen,
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PWCHAR MangledName
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);
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NTSTATUS WmipBuildInstanceSet(
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PWMIREGGUID RegGuid,
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PWMIREGINFOW WmiRegInfo,
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ULONG BufferSize,
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PBINSTANCESET InstanceSet,
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ULONG ProviderId,
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LPCTSTR MofImagePath
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);
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NTSTATUS WmipLinkDataSourceToList(
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PBDATASOURCE DataSource,
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BOOLEAN AddDSToList
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);
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void WmipSendGuidUpdateNotifications(
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NOTIFICATIONTYPES NotificationType,
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ULONG GuidCount,
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PTRCACHE *GuidList
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);
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void WmipGenerateBinaryMofNotification(
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PBINSTANCESET BinaryMofInstanceSet,
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LPCGUID Guid
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);
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void WmipGenerateRegistrationNotification(
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PBDATASOURCE DataSource,
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ULONG NotificationCode
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);
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NTSTATUS WmipAddMofResource(
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PBDATASOURCE DataSource,
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LPWSTR ImagePath,
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BOOLEAN IsImagePath,
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LPWSTR MofResourceName,
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PBOOLEAN NewMofResource
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);
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PBINSTANCESET WmipFindISInDSByGuid(
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PBDATASOURCE DataSource,
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LPGUID Guid
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);
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ULONG WmipUpdateAddGuid(
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PBDATASOURCE DataSource,
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PWMIREGGUID RegGuid,
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PWMIREGINFO WmiRegInfo,
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ULONG BufferSize,
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PBINSTANCESET *AddModInstanceSet
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);
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PTCHAR GuidToString(
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PTCHAR s,
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LPGUID piid
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);
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BOOLEAN WmipUpdateRemoveGuid(
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PBDATASOURCE DataSource,
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PWMIREGGUID RegGuid,
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PBINSTANCESET *AddModInstanceSet
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);
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BOOLEAN WmipIsEqualInstanceSets(
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PBINSTANCESET InstanceSet1,
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PBINSTANCESET InstanceSet2
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);
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ULONG WmipUpdateModifyGuid(
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PBDATASOURCE DataSource,
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PWMIREGGUID RegGuid,
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PWMIREGINFO WmiRegInfo,
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ULONG BufferSize,
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PBINSTANCESET *AddModInstanceSet
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);
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void WmipCachePtrs(
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LPGUID Ptr1,
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PBINSTANCESET Ptr2,
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ULONG *PtrCount,
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ULONG *PtrMax,
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PTRCACHE **PtrArray
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);
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NTSTATUS WmipUpdateDataSource(
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PREGENTRY RegEntry,
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PWMIREGINFOW WmiRegInfo,
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ULONG RetSize
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);
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void WmipRemoveDataSourceByDS(
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PBDATASOURCE DataSource
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);
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NTSTATUS WmipRemoveDataSource(
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PREGENTRY RegEntry
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);
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NTSTATUS WmipInitializeDataStructs(
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void
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);
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NTSTATUS WmipEnumerateMofResources(
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PWMIMOFLIST MofList,
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ULONG BufferSize,
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ULONG *RetSize
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT,WmipInitializeDataStructs)
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#pragma alloc_text(PAGE,WmipEnableCollectionForNewGuid)
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#pragma alloc_text(PAGE,WmipDisableCollectionForRemovedGuid)
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#pragma alloc_text(PAGE,WmipSaveTraceGuidMap)
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#pragma alloc_text(PAGE,WmipDetermineInstanceBaseIndex)
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#pragma alloc_text(PAGE,WmipMangleInstanceName)
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#pragma alloc_text(PAGE,WmipBuildInstanceSet)
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#pragma alloc_text(PAGE,WmipLinkDataSourceToList)
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#pragma alloc_text(PAGE,WmipSendGuidUpdateNotifications)
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#pragma alloc_text(PAGE,WmipGenerateBinaryMofNotification)
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#pragma alloc_text(PAGE,WmipGenerateMofResourceNotification)
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#pragma alloc_text(PAGE,WmipGenerateRegistrationNotification)
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#pragma alloc_text(PAGE,WmipAddMofResource)
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#pragma alloc_text(PAGE,WmipAddDataSource)
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#pragma alloc_text(PAGE,WmipFindISInDSByGuid)
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#pragma alloc_text(PAGE,WmipUpdateAddGuid)
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#pragma alloc_text(PAGE,WmipUpdateRemoveGuid)
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#pragma alloc_text(PAGE,WmipIsEqualInstanceSets)
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#pragma alloc_text(PAGE,WmipUpdateModifyGuid)
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#pragma alloc_text(PAGE,WmipCachePtrs)
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#pragma alloc_text(PAGE,WmipUpdateDataSource)
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#pragma alloc_text(PAGE,WmipRemoveDataSourceByDS)
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#pragma alloc_text(PAGE,WmipRemoveDataSource)
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#pragma alloc_text(PAGE,WmipEnumerateMofResources)
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#if DBG
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#pragma alloc_text(PAGE,GuidToString)
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#endif
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#endif
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#ifdef ALLOC_DATA_PRAGMA
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#pragma const_seg("PAGECONST")
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#endif
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const GUID WmipBinaryMofGuid = BINARY_MOF_GUID;
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// {4EE0B301-94BC-11d0-A4EC-00A0C9062910}
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const GUID RegChangeNotificationGuid =
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{ 0x4ee0b301, 0x94bc, 0x11d0, { 0xa4, 0xec, 0x0, 0xa0, 0xc9, 0x6, 0x29, 0x10 } };
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void WmipEnableCollectionForNewGuid(
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LPGUID Guid,
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PBINSTANCESET InstanceSet
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)
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{
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WNODE_HEADER Wnode;
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PBGUIDENTRY GuidEntry;
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ULONG Status;
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BOOLEAN IsTraceLog;
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PAGED_CODE();
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GuidEntry = WmipFindGEByGuid(Guid, FALSE);
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if (GuidEntry != NULL)
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{
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memset(&Wnode, 0, sizeof(WNODE_HEADER));
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memcpy(&Wnode.Guid, Guid, sizeof(GUID));
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Wnode.BufferSize = sizeof(WNODE_HEADER);
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WmipEnterSMCritSection();
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if ((GuidEntry->EventRefCount > 0) &&
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((InstanceSet->Flags & IS_ENABLE_EVENT) == 0))
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{
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//
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// Events were previously enabled for this guid, but not for this
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// instance set so call data source for instance set to enable
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// the events. First set the in progress flag and InstanceSet
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// set flag to denote that events have been enabled for the
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// instance set.
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InstanceSet->Flags |= IS_ENABLE_EVENT;
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//
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// If it is Tracelog, NewGuid notifications are piggybacked with
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// Registration call return.
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//
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IsTraceLog = ((InstanceSet->Flags & IS_TRACED) == IS_TRACED);
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if (IsTraceLog)
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{
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if (!(InstanceSet->DataSource->Flags & DS_KERNEL_MODE) )
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{
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if (GuidEntry != NULL)
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{
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WmipUnreferenceGE(GuidEntry);
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}
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WmipLeaveSMCritSection();
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return;
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}
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//
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// For the Kernel Mode Trace Providers pass on the context
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//
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Wnode.HistoricalContext = GuidEntry->LoggerContext;
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}
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GuidEntry->Flags |= GE_FLAG_NOTIFICATION_IN_PROGRESS;
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WmipLeaveSMCritSection();
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WmipDeliverWnodeToDS(IRP_MN_ENABLE_EVENTS,
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InstanceSet->DataSource,
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&Wnode,
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Wnode.BufferSize);
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WmipEnterSMCritSection();
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//
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// Now we need to check if events were disabled while the enable
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// request was in progress. If so go do the work to actually
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// disable them.
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if (GuidEntry->EventRefCount == 0)
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{
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Status = WmipDoDisableRequest(GuidEntry,
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TRUE,
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IsTraceLog,
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GuidEntry->LoggerContext,
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GE_FLAG_NOTIFICATION_IN_PROGRESS);
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} else {
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GuidEntry->Flags &= ~GE_FLAG_NOTIFICATION_IN_PROGRESS;
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}
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}
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//
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// Now check to see if collection needs to be enabled for this guid
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//
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if ((GuidEntry->CollectRefCount > 0) &&
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((InstanceSet->Flags & IS_ENABLE_COLLECTION) == 0) &&
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(InstanceSet->Flags & IS_EXPENSIVE) )
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{
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//
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// Collection was previously enabled for this guid, but not
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// for this instance set so call data source for instance set
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// to enable collection. First set the in progress flag and
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// InstanceSet set flag to denote that collection has been enabled
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// for the instance set.
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//
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GuidEntry->Flags |= GE_FLAG_COLLECTION_IN_PROGRESS;
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InstanceSet->Flags |= IS_ENABLE_COLLECTION;
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WmipLeaveSMCritSection();
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WmipDeliverWnodeToDS(IRP_MN_ENABLE_COLLECTION,
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InstanceSet->DataSource,
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&Wnode,
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Wnode.BufferSize);
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WmipEnterSMCritSection();
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//
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// Now we need to check if events were disabled while the enable
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// request was in progress. If so go do the work to actually
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// disable them.
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//
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if (GuidEntry->CollectRefCount == 0)
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{
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Status = WmipDoDisableRequest(GuidEntry,
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FALSE,
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FALSE,
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0,
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GE_FLAG_COLLECTION_IN_PROGRESS);
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} else {
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GuidEntry->Flags &= ~GE_FLAG_COLLECTION_IN_PROGRESS;
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//
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// If there are any other threads that were waiting
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// until all of the enable/disable work completed, we
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// close the event handle to release them from their wait.
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//
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WmipReleaseCollectionEnabled(GuidEntry);
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}
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}
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WmipUnreferenceGE(GuidEntry);
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WmipLeaveSMCritSection();
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} else {
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WmipAssert(FALSE);
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}
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}
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void WmipDisableCollectionForRemovedGuid(
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LPGUID Guid,
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PBINSTANCESET InstanceSet
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)
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{
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WNODE_HEADER Wnode;
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PBGUIDENTRY GuidEntry;
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ULONG Status;
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BOOLEAN IsTraceLog;
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PAGED_CODE();
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GuidEntry = WmipFindGEByGuid(Guid, FALSE);
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if (GuidEntry != NULL)
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{
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memset(&Wnode, 0, sizeof(WNODE_HEADER));
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memcpy(&Wnode.Guid, Guid, sizeof(GUID));
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Wnode.BufferSize = sizeof(WNODE_HEADER);
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WmipEnterSMCritSection();
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if ((GuidEntry->EventRefCount > 0) &&
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((InstanceSet->Flags & IS_ENABLE_EVENT) != 0))
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{
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// Events were previously enabled for this guid, but not for this
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// instance set so call data source for instance set to enable
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// the events. First set the in progress flag and InstanceSet
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// set flag to denote that events have been enabled for the
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// instance set.
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InstanceSet->Flags &= ~IS_ENABLE_EVENT;
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//
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// If it is Tracelog, RemoveGuid notifications are handled
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// through UnregisterGuids call.
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//
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IsTraceLog = ((InstanceSet->Flags & IS_TRACED) == IS_TRACED);
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if (IsTraceLog)
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{
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if ( !(InstanceSet->DataSource->Flags & DS_KERNEL_MODE))
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{
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WmipUnreferenceGE(GuidEntry);
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WmipLeaveSMCritSection();
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return;
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}
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Wnode.HistoricalContext = GuidEntry->LoggerContext;
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}
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GuidEntry->Flags |= GE_FLAG_NOTIFICATION_IN_PROGRESS;
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WmipLeaveSMCritSection();
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WmipDeliverWnodeToDS(IRP_MN_DISABLE_EVENTS,
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InstanceSet->DataSource,
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&Wnode,
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Wnode.BufferSize);
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WmipEnterSMCritSection();
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//
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// Now we need to check if events were disabled while the enable
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// request was in progress. If so go do the work to actually
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// disable them.
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if (GuidEntry->EventRefCount == 0)
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{
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Status = WmipDoDisableRequest(GuidEntry,
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TRUE,
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IsTraceLog,
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GuidEntry->LoggerContext,
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GE_FLAG_NOTIFICATION_IN_PROGRESS);
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} else {
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GuidEntry->Flags &= ~GE_FLAG_NOTIFICATION_IN_PROGRESS;
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}
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}
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//
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// Now check to see if collection needs to be enabled for this guid
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if ((GuidEntry->CollectRefCount > 0) &&
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((InstanceSet->Flags & IS_ENABLE_COLLECTION) != 0))
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{
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// Collection was previously enabled for this guid, but not
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// for this instance set so call data source for instance set
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// to enable collection. First set the in progress flag and
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// InstanceSet set flag to denote that collection has been enabled
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// for the instance set.
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GuidEntry->Flags |= GE_FLAG_COLLECTION_IN_PROGRESS;
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InstanceSet->Flags &= ~IS_ENABLE_COLLECTION;
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WmipLeaveSMCritSection();
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WmipDeliverWnodeToDS(IRP_MN_DISABLE_COLLECTION,
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InstanceSet->DataSource,
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&Wnode,
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Wnode.BufferSize);
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WmipEnterSMCritSection();
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//
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// Now we need to check if events were disabled while the enable
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// request was in progress. If so go do the work to actually
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// disable them.
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if (GuidEntry->CollectRefCount == 0)
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{
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Status = WmipDoDisableRequest(GuidEntry,
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FALSE,
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FALSE,
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0,
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GE_FLAG_COLLECTION_IN_PROGRESS);
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} else {
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GuidEntry->Flags &= ~GE_FLAG_COLLECTION_IN_PROGRESS;
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//
|
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// If there are any other threads that were waiting
|
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// until all of the enable/disable work completed, we
|
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// close the event handle to release them from their wait.
|
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//
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WmipReleaseCollectionEnabled(GuidEntry);
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}
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}
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WmipUnreferenceGE(GuidEntry);
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WmipLeaveSMCritSection();
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} else {
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WmipAssert(FALSE);
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}
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}
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VOID
|
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WmipSaveTraceGuidMap(
|
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LPGUID Guid,
|
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PBINSTANCESET ControlInstanceSet
|
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)
|
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/*++
|
|
|
|
Routine Description:
|
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This routine is called for an TRACE CONTROL GUID that's being Unregistered.
|
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If a logger session is on, then we save the GuidMap information
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so that at the end of logger stop, we can dump it to the
|
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logfile at the end.
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|
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Arguments:
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Guid Guid that's getting unregistered.
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ControlInstanceSet InstanceSet that's going away.
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Return Value:
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|
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--*/
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{
|
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PGUIDENTRY GuidEntry;
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PAGED_CODE();
|
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GuidEntry = WmipFindGEByGuid(Guid, FALSE);
|
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|
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if (GuidEntry != NULL)
|
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{
|
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PBDATASOURCE DataSource;
|
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PLIST_ENTRY InstanceSetList;
|
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PBINSTANCESET InstanceSet;
|
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PGUIDMAPENTRY GuidMap;
|
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ULONGLONG SystemTime;
|
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PTRACEGUIDMAP TraceGuidMapPtr;
|
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ULONG i;
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PTRACE_ENABLE_CONTEXT pContext = (PTRACE_ENABLE_CONTEXT) &GuidEntry->LoggerContext;
|
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|
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//
|
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// If this Guid is not currently enabled for tracing, return
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//
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if ( ( (GuidEntry->Flags & GE_NOTIFICATION_TRACE_FLAG) != GE_NOTIFICATION_TRACE_FLAG ) ||
|
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( pContext->InternalFlag & EVENT_TRACE_INTERNAL_FLAG_PRIVATE) )
|
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{
|
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WmipUnreferenceGE(GuidEntry);
|
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return;
|
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}
|
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|
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KeQuerySystemTime((PLARGE_INTEGER)&SystemTime);
|
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|
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WmipEnterSMCritSection();
|
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|
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for (i=0, TraceGuidMapPtr = ControlInstanceSet->TraceGuidMap;
|
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((i < ControlInstanceSet->TransGuidCount) && (ControlInstanceSet->TraceGuidMap != NULL));
|
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i++, TraceGuidMapPtr++) {
|
|
GuidMap = (PGUIDMAPENTRY) WmipAllocWithTag(sizeof(GUIDMAPENTRY), WMI_GM_POOLTAG);
|
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if (GuidMap != NULL) {
|
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GuidMap->GuidMap.Guid = ControlInstanceSet->TraceGuidMap->Guid;
|
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GuidMap->GuidMap.GuidMapHandle = (ULONG_PTR)TraceGuidMapPtr;
|
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GuidMap->LoggerContext = GuidEntry->LoggerContext;
|
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GuidMap->GuidMap.SystemTime = SystemTime;
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InsertTailList(WmipGMHeadPtr, &GuidMap->Entry);
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}
|
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}
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WmipLeaveSMCritSection();
|
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|
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WmipUnreferenceGE(GuidEntry);
|
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}
|
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}
|
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|
|
|
|
ULONG WmipDetermineInstanceBaseIndex(
|
|
LPGUID Guid,
|
|
PWCHAR BaseName,
|
|
ULONG InstanceCount
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Figure out the base index for the instance names specified by a base
|
|
instance name. We walk the list of instances sets for the guid and if
|
|
there is a match in the base instance name we set the base instance index
|
|
above that used by the previously registered instance set.
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|
|
Arguments:
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|
|
|
Guid points at guid for the instance names
|
|
BaseName points at the base name for the instances
|
|
InstanceCount is the count of instance names
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|
|
Return Value:
|
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|
|
Base index for instance name
|
|
|
|
--*/
|
|
{
|
|
PBGUIDENTRY GuidEntry;
|
|
ULONG BaseIndex = 0;
|
|
PLIST_ENTRY InstanceSetList;
|
|
PBINSTANCESET InstanceSet;
|
|
ULONG LastBaseIndex;
|
|
|
|
PAGED_CODE();
|
|
|
|
WmipEnterSMCritSection();
|
|
|
|
GuidEntry = WmipFindGEByGuid(Guid, FALSE);
|
|
if (GuidEntry != NULL)
|
|
{
|
|
InstanceSetList = GuidEntry->ISHead.Flink;
|
|
while (InstanceSetList != &GuidEntry->ISHead)
|
|
{
|
|
InstanceSet = CONTAINING_RECORD(InstanceSetList,
|
|
INSTANCESET,
|
|
GuidISList);
|
|
if (InstanceSet->Flags & IS_INSTANCE_BASENAME)
|
|
{
|
|
if (wcscmp(BaseName, InstanceSet->IsBaseName->BaseName) == 0)
|
|
{
|
|
LastBaseIndex = InstanceSet->IsBaseName->BaseIndex + InstanceSet->Count;
|
|
if (BaseIndex <= LastBaseIndex)
|
|
{
|
|
BaseIndex = LastBaseIndex;
|
|
}
|
|
}
|
|
}
|
|
InstanceSetList = InstanceSetList->Flink;
|
|
}
|
|
WmipUnreferenceGE(GuidEntry);
|
|
}
|
|
|
|
WmipLeaveSMCritSection();
|
|
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: Static instance name %ws has base index %x\n",
|
|
BaseName, BaseIndex));
|
|
return(BaseIndex);
|
|
}
|
|
|
|
ULONG WmipMangleInstanceName(
|
|
LPGUID Guid,
|
|
PWCHAR Name,
|
|
ULONG MaxMangledNameLen,
|
|
PWCHAR MangledName
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Copies a static instance name from the input buffer to the output
|
|
buffer, mangling it if the name collides with another name for the
|
|
same guid.
|
|
|
|
Arguments:
|
|
|
|
Guid points at guid for the instance name
|
|
Name points at the proposed instance name
|
|
MaxMangledNameLen has the maximum number of chars in mangled name buffer
|
|
MangledName points at buffer to return mangled name
|
|
|
|
Return Value:
|
|
|
|
Actual length of mangled name
|
|
|
|
--*/
|
|
{
|
|
PBGUIDENTRY GuidEntry;
|
|
WCHAR ManglingChar;
|
|
ULONG ManglePos;
|
|
ULONG InstanceIndex;
|
|
PBINSTANCESET InstanceSet;
|
|
|
|
PAGED_CODE();
|
|
|
|
WmipAssert(MaxMangledNameLen >= wcslen(Name));
|
|
|
|
wcsncpy(MangledName, Name, MaxMangledNameLen);
|
|
|
|
GuidEntry = WmipFindGEByGuid(Guid, FALSE);
|
|
|
|
if (GuidEntry != NULL)
|
|
{
|
|
ManglePos = wcslen(MangledName)-1;
|
|
ManglingChar = L'Z';
|
|
|
|
//
|
|
// Loop until we get a unique name
|
|
InstanceSet = WmipFindISinGEbyName(GuidEntry,
|
|
MangledName,
|
|
&InstanceIndex);
|
|
while (InstanceSet != NULL)
|
|
{
|
|
WmipUnreferenceIS(InstanceSet);
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: Need to mangle name %ws\n",
|
|
MangledName));
|
|
if (ManglingChar == L'Z')
|
|
{
|
|
ManglingChar = L'A';
|
|
if (++ManglePos == MaxMangledNameLen)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: Instance Name could not be mangled\n"));
|
|
break;
|
|
}
|
|
MangledName[ManglePos+1] = UNICODE_NULL;
|
|
} else {
|
|
ManglingChar++;
|
|
}
|
|
MangledName[ManglePos] = ManglingChar;
|
|
InstanceSet = WmipFindISinGEbyName(GuidEntry,
|
|
MangledName,
|
|
&InstanceIndex) ;
|
|
}
|
|
WmipUnreferenceGE(GuidEntry);
|
|
}
|
|
|
|
return(wcslen(MangledName)+1);
|
|
}
|
|
|
|
|
|
NTSTATUS WmipBuildInstanceSet(
|
|
PWMIREGGUID RegGuid,
|
|
PWMIREGINFOW WmiRegInfo,
|
|
ULONG BufferSize,
|
|
PBINSTANCESET InstanceSet,
|
|
ULONG ProviderId,
|
|
LPCTSTR MofImagePath
|
|
)
|
|
{
|
|
PWCHAR InstanceName, InstanceNamePtr;
|
|
PBISBASENAME IsBaseName;
|
|
PBISSTATICNAMES IsStaticName;
|
|
ULONG SizeNeeded;
|
|
ULONG SuffixSize;
|
|
PWCHAR StaticNames;
|
|
ULONG Len;
|
|
ULONG InstanceCount;
|
|
ULONG j;
|
|
ULONG MaxStaticInstanceNameSize;
|
|
PWCHAR StaticInstanceNameBuffer;
|
|
ULONG InstanceNameOffset;
|
|
NTSTATUS Status;
|
|
|
|
PAGED_CODE();
|
|
|
|
//
|
|
// Remember the count of instances for the guid in the DS
|
|
//
|
|
InstanceCount = RegGuid->InstanceCount;
|
|
InstanceSet->Count = InstanceCount;
|
|
|
|
InstanceSet->ProviderId = ProviderId;
|
|
|
|
//
|
|
// Reset any flags that might be changed by a new REGGUID
|
|
//
|
|
InstanceSet->Flags &= ~(IS_EXPENSIVE |
|
|
IS_EVENT_ONLY |
|
|
IS_PDO_INSTANCENAME |
|
|
IS_INSTANCE_STATICNAMES |
|
|
IS_INSTANCE_BASENAME);
|
|
|
|
//
|
|
// Finish initializing the Instance Set flags
|
|
//
|
|
if (RegGuid->Flags & WMIREG_FLAG_EXPENSIVE)
|
|
{
|
|
InstanceSet->Flags |= IS_EXPENSIVE;
|
|
}
|
|
|
|
if (RegGuid->Flags & WMIREG_FLAG_TRACED_GUID)
|
|
{
|
|
//
|
|
// This guid is not queryable, but is used for sending trace
|
|
// events. We mark the InstanceSet as special
|
|
InstanceSet->Flags |= IS_TRACED;
|
|
|
|
if (RegGuid->Flags & WMIREG_FLAG_TRACE_CONTROL_GUID)
|
|
{
|
|
InstanceSet->Flags |= IS_CONTROL_GUID;
|
|
}
|
|
}
|
|
|
|
if (RegGuid->Flags & WMIREG_FLAG_EVENT_ONLY_GUID)
|
|
{
|
|
//
|
|
// This guid is not queryable, but is only used for sending
|
|
// events. We mark the InstanceSet as special
|
|
InstanceSet->Flags |= IS_EVENT_ONLY;
|
|
}
|
|
|
|
InstanceName = (LPWSTR)OffsetToPtr(WmiRegInfo,
|
|
RegGuid->BaseNameOffset);
|
|
|
|
InstanceNameOffset = RegGuid->BaseNameOffset;
|
|
if (RegGuid->Flags & WMIREG_FLAG_INSTANCE_LIST)
|
|
{
|
|
//
|
|
// We have static list of instance names that might need mangling
|
|
// We assume that any name mangling that must occur can be
|
|
// done with a suffix of 5 or fewer characters. This allows
|
|
// up to 100,000 identical static instance names within the
|
|
// same guid. First lets get the amount of memory we'll need
|
|
//
|
|
SizeNeeded = FIELD_OFFSET(ISSTATICENAMES, StaticNamePtr) + 1;
|
|
SuffixSize = MAXBASENAMESUFFIXSIZE;
|
|
MaxStaticInstanceNameSize = 0;
|
|
for (j = 0; j < InstanceCount; j++)
|
|
{
|
|
Status = WmipValidateWmiRegInfoString(WmiRegInfo,
|
|
BufferSize,
|
|
InstanceNameOffset,
|
|
&InstanceNamePtr);
|
|
|
|
if ((! NT_SUCCESS(Status)) || (InstanceNamePtr == NULL))
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: bad static instance name %x\n", InstanceNamePtr));
|
|
WmipReportEventLog(EVENT_WMI_INVALID_REGINFO,
|
|
EVENTLOG_WARNING_TYPE,
|
|
0,
|
|
WmiRegInfo->BufferSize,
|
|
WmiRegInfo,
|
|
1,
|
|
MofImagePath ? MofImagePath : TEXT("Unknown"));
|
|
return(STATUS_INVALID_PARAMETER);
|
|
}
|
|
|
|
if (*InstanceNamePtr > MaxStaticInstanceNameSize)
|
|
{
|
|
MaxStaticInstanceNameSize = *InstanceNamePtr;
|
|
}
|
|
SizeNeeded += *InstanceNamePtr + 1 + SuffixSize +
|
|
(sizeof(PWCHAR) / sizeof(WCHAR));
|
|
|
|
InstanceNameOffset += *InstanceNamePtr + 2;
|
|
}
|
|
|
|
IsStaticName = (PBISSTATICNAMES)WmipAllocString(SizeNeeded);
|
|
if (IsStaticName == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: alloc static instance names\n"));
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
InstanceSet->Flags |= IS_INSTANCE_STATICNAMES;
|
|
InstanceSet->IsStaticNames = IsStaticName;
|
|
StaticNames = (PWCHAR) ((PUCHAR)IsStaticName +
|
|
(InstanceCount * sizeof(PWCHAR)));
|
|
InstanceNamePtr = InstanceName;
|
|
StaticInstanceNameBuffer = WmipAlloc(MaxStaticInstanceNameSize + sizeof(WCHAR));
|
|
if (StaticInstanceNameBuffer == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: couldn't alloc StaticInstanceNameBuffer\n"));
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
for (j = 0; j < InstanceCount; j++)
|
|
{
|
|
IsStaticName->StaticNamePtr[j] = StaticNames;
|
|
memcpy(StaticInstanceNameBuffer, InstanceNamePtr+1, *InstanceNamePtr);
|
|
StaticInstanceNameBuffer[*InstanceNamePtr/sizeof(WCHAR)] = UNICODE_NULL;
|
|
Len = WmipMangleInstanceName(&RegGuid->Guid,
|
|
StaticInstanceNameBuffer,
|
|
*InstanceNamePtr +
|
|
SuffixSize + 1,
|
|
StaticNames);
|
|
StaticNames += Len;
|
|
InstanceNamePtr += (*((USHORT *)InstanceNamePtr) + 2)/sizeof(WCHAR);
|
|
}
|
|
|
|
WmipFree(StaticInstanceNameBuffer);
|
|
} else if (RegGuid->Flags & WMIREG_FLAG_INSTANCE_BASENAME) {
|
|
//
|
|
// We have static instance names built from a base name
|
|
|
|
Status = WmipValidateWmiRegInfoString(WmiRegInfo,
|
|
BufferSize,
|
|
InstanceNameOffset,
|
|
&InstanceNamePtr);
|
|
|
|
if (! NT_SUCCESS(Status))
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: Invalid instance base name %x\n",
|
|
InstanceName));
|
|
WmipReportEventLog(EVENT_WMI_INVALID_REGINFO,
|
|
EVENTLOG_WARNING_TYPE,
|
|
0,
|
|
WmiRegInfo->BufferSize,
|
|
WmiRegInfo,
|
|
1,
|
|
MofImagePath ? MofImagePath : TEXT("Unknown"));
|
|
return(STATUS_INVALID_PARAMETER);
|
|
}
|
|
|
|
InstanceSet->Flags |= IS_INSTANCE_BASENAME;
|
|
|
|
if (RegGuid->Flags & WMIREG_FLAG_INSTANCE_PDO)
|
|
{
|
|
InstanceSet->Flags |= IS_PDO_INSTANCENAME;
|
|
}
|
|
|
|
IsBaseName = (PBISBASENAME)WmipAlloc(*InstanceName +
|
|
sizeof(WCHAR) +
|
|
FIELD_OFFSET(ISBASENAME,
|
|
BaseName));
|
|
if (IsBaseName == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: alloc ISBASENAME failed\n"));
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
InstanceSet->IsBaseName = IsBaseName;
|
|
|
|
memcpy(IsBaseName->BaseName, InstanceName+1, *InstanceName);
|
|
IsBaseName->BaseName[*InstanceName/sizeof(WCHAR)] = UNICODE_NULL;
|
|
IsBaseName->BaseIndex = WmipDetermineInstanceBaseIndex(
|
|
&RegGuid->Guid,
|
|
IsBaseName->BaseName,
|
|
RegGuid->InstanceCount);
|
|
|
|
}
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS WmipLinkDataSourceToList(
|
|
PBDATASOURCE DataSource,
|
|
BOOLEAN AddDSToList
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will take a DataSource that was just registered or updated
|
|
and link any new InstanceSets to an appropriate GuidEntry. Then if the
|
|
AddDSToList is TRUE the DataSource itself will be added to the main
|
|
data source list.
|
|
|
|
This routine will do all of the linkages within a critical section so the
|
|
data source and its new instances are added atomically. The routine will
|
|
also determine if the guid entry associated with a InstanceSet is a
|
|
duplicate of another that is already on the main guid entry list and if
|
|
so will use the preexisting guid entry.
|
|
|
|
This routine assumes that the SM critical section has been taken
|
|
|
|
Arguments:
|
|
|
|
DataSource is a based pointer to a DataSource structure
|
|
|
|
AddDSToList is TRUE then data source will be added to the main list
|
|
of data sources
|
|
|
|
Return Value:
|
|
|
|
ERROR_SUCCESS or an error code
|
|
|
|
--*/
|
|
{
|
|
PBINSTANCESET InstanceSet;
|
|
PLIST_ENTRY InstanceSetList;
|
|
PBGUIDENTRY GuidEntry;
|
|
|
|
PAGED_CODE();
|
|
|
|
InstanceSetList = DataSource->ISHead.Flink;
|
|
while (InstanceSetList != &DataSource->ISHead)
|
|
{
|
|
InstanceSet = CONTAINING_RECORD(InstanceSetList,
|
|
INSTANCESET,
|
|
DSISList);
|
|
//
|
|
// If this instance set has just been registered then we need to
|
|
// get it on a GuidEntry list.
|
|
if (InstanceSet->Flags & IS_NEWLY_REGISTERED)
|
|
{
|
|
//
|
|
// See if there is already a GUID entry for the instance set.
|
|
// If not go allocate a new guid entry and place it on the
|
|
// main guid list. If there already is a GuidEntry for the
|
|
// InstanceSet we will assign the ref count that was given by
|
|
// the WmipFindGEByGuid to the DataSource which will unreference
|
|
// the GuidEntry when the DataSource is unregistered.
|
|
GuidEntry = WmipFindGEByGuid((LPGUID)InstanceSet->GuidEntry,
|
|
FALSE);
|
|
if (GuidEntry == NULL)
|
|
{
|
|
GuidEntry = WmipAllocGuidEntry();
|
|
if (GuidEntry == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipLinkDataSourceToList: WmipAllocGuidEntry failed\n"));
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
//
|
|
// Initialize the new GuidEntry and place it on the master
|
|
// GuidEntry list.
|
|
memcpy(&GuidEntry->Guid,
|
|
(LPGUID)InstanceSet->GuidEntry,
|
|
sizeof(GUID));
|
|
|
|
InsertHeadList(WmipGEHeadPtr, &GuidEntry->MainGEList);
|
|
}
|
|
InstanceSet->GuidEntry = GuidEntry;
|
|
InstanceSet->Flags &= ~IS_NEWLY_REGISTERED;
|
|
InsertTailList(&GuidEntry->ISHead, &InstanceSet->GuidISList);
|
|
GuidEntry->ISCount++;
|
|
}
|
|
|
|
InstanceSetList = InstanceSetList->Flink;
|
|
}
|
|
|
|
|
|
if (AddDSToList)
|
|
{
|
|
WmipAssert(! (DataSource->Flags & FLAG_ENTRY_ON_INUSE_LIST));
|
|
|
|
DataSource->Flags |= FLAG_ENTRY_ON_INUSE_LIST;
|
|
InsertTailList(WmipDSHeadPtr, &DataSource->MainDSList);
|
|
}
|
|
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
void WmipSendGuidUpdateNotifications(
|
|
NOTIFICATIONTYPES NotificationType,
|
|
ULONG GuidCount,
|
|
PTRCACHE *GuidList
|
|
)
|
|
{
|
|
PUCHAR WnodeBuffer;
|
|
PWNODE_SINGLE_INSTANCE Wnode;
|
|
ULONG WnodeSize;
|
|
LPGUID GuidPtr;
|
|
ULONG i;
|
|
PWCHAR InstanceName;
|
|
PMSWmi_GuidRegistrationInfo RegInfo;
|
|
ULONG DataBlockSize;
|
|
GUID RegChangeGuid = MSWmi_GuidRegistrationInfoGuid;
|
|
#define REGUPDATENAME L"REGUPDATEINFO"
|
|
|
|
PAGED_CODE();
|
|
|
|
DataBlockSize = sizeof(MSWmi_GuidRegistrationInfo) +
|
|
GuidCount*sizeof(GUID) - sizeof(GUID);
|
|
|
|
WnodeSize = sizeof(WNODE_SINGLE_INSTANCE) +
|
|
sizeof(USHORT) + sizeof(REGUPDATENAME) + 8 + DataBlockSize;
|
|
|
|
WnodeBuffer = WmipAlloc(WnodeSize);
|
|
if (WnodeBuffer != NULL)
|
|
{
|
|
Wnode = (PWNODE_SINGLE_INSTANCE)WnodeBuffer;
|
|
|
|
//
|
|
// Setup a WNODE_SINGLE_INSTANCE event with the updated guid
|
|
// registration information
|
|
//
|
|
memset(Wnode, 0, sizeof(WNODE_HEADER));
|
|
Wnode->WnodeHeader.Guid = RegChangeGuid;
|
|
Wnode->WnodeHeader.BufferSize = WnodeSize;
|
|
Wnode->WnodeHeader.Flags = WNODE_FLAG_SINGLE_INSTANCE |
|
|
WNODE_FLAG_EVENT_ITEM;
|
|
Wnode->OffsetInstanceName = sizeof(WNODE_SINGLE_INSTANCE);
|
|
Wnode->DataBlockOffset = ((Wnode->OffsetInstanceName +
|
|
sizeof(USHORT) + sizeof(REGUPDATENAME) + 7) & ~7);
|
|
Wnode->SizeDataBlock = DataBlockSize;
|
|
|
|
InstanceName = (PWCHAR)OffsetToPtr(Wnode, Wnode->OffsetInstanceName);
|
|
*InstanceName++ = sizeof(REGUPDATENAME);
|
|
wcscpy(InstanceName, REGUPDATENAME);
|
|
|
|
RegInfo = (PMSWmi_GuidRegistrationInfo)OffsetToPtr(Wnode,
|
|
Wnode->DataBlockOffset);
|
|
RegInfo->Operation = NotificationType;
|
|
RegInfo->GuidCount = GuidCount;
|
|
|
|
GuidPtr = (LPGUID)RegInfo->GuidList;
|
|
for (i = 0; i < GuidCount; i++)
|
|
{
|
|
*GuidPtr++ = *GuidList[i].Guid;
|
|
}
|
|
|
|
WmipProcessEvent((PWNODE_HEADER)Wnode, TRUE, FALSE);
|
|
|
|
WmipFree(WnodeBuffer);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
void WmipGenerateBinaryMofNotification(
|
|
PBINSTANCESET BinaryMofInstanceSet,
|
|
LPCGUID Guid
|
|
)
|
|
{
|
|
PWNODE_SINGLE_INSTANCE Wnode;
|
|
ULONG ImagePathLen, ResourceNameLen, InstanceNameLen, BufferSize;
|
|
PWCHAR Ptr;
|
|
ULONG i;
|
|
|
|
PAGED_CODE();
|
|
|
|
if (BinaryMofInstanceSet->Count == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < BinaryMofInstanceSet->Count; i++)
|
|
{
|
|
ImagePathLen = sizeof(USHORT);
|
|
InstanceNameLen = (sizeof(USHORT) + 7) & ~7;
|
|
|
|
if (BinaryMofInstanceSet->Flags & IS_INSTANCE_STATICNAMES)
|
|
{
|
|
ResourceNameLen = ((wcslen(BinaryMofInstanceSet->IsStaticNames->StaticNamePtr[i])+1) * sizeof(WCHAR)) + sizeof(USHORT);
|
|
} else if (BinaryMofInstanceSet->Flags & IS_INSTANCE_BASENAME) {
|
|
ResourceNameLen = (((wcslen(BinaryMofInstanceSet->IsBaseName->BaseName) +
|
|
MAXBASENAMESUFFIXSIZE) * sizeof(WCHAR)) + sizeof(USHORT));
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
BufferSize = FIELD_OFFSET(WNODE_SINGLE_INSTANCE, VariableData) +
|
|
InstanceNameLen +
|
|
ImagePathLen +
|
|
ResourceNameLen;
|
|
|
|
Wnode = (PWNODE_SINGLE_INSTANCE)WmipAlloc(BufferSize);
|
|
if (Wnode != NULL)
|
|
{
|
|
Wnode->WnodeHeader.BufferSize = BufferSize;
|
|
Wnode->WnodeHeader.ProviderId = MOFEVENT_ACTION_BINARY_MOF;
|
|
Wnode->WnodeHeader.Version = 1;
|
|
Wnode->WnodeHeader.Linkage = 0;
|
|
Wnode->WnodeHeader.Flags = (WNODE_FLAG_EVENT_ITEM |
|
|
WNODE_FLAG_SINGLE_INSTANCE);
|
|
memcpy(&Wnode->WnodeHeader.Guid,
|
|
Guid,
|
|
sizeof(GUID));
|
|
WmiInsertTimestamp(&Wnode->WnodeHeader);
|
|
Wnode->OffsetInstanceName = FIELD_OFFSET(WNODE_SINGLE_INSTANCE,
|
|
VariableData);
|
|
Wnode->DataBlockOffset = Wnode->OffsetInstanceName +
|
|
InstanceNameLen;
|
|
Wnode->SizeDataBlock = ImagePathLen + ResourceNameLen;
|
|
Ptr = (PWCHAR)&Wnode->VariableData;
|
|
|
|
*Ptr++ = 0; // Empty instance name
|
|
|
|
Ptr = (PWCHAR)OffsetToPtr(Wnode, Wnode->DataBlockOffset);
|
|
*Ptr++ = 0; // Empty image path
|
|
|
|
// Instance name for binary mof resource
|
|
if (BinaryMofInstanceSet->Flags & IS_INSTANCE_STATICNAMES)
|
|
{
|
|
*Ptr++ = (USHORT)(ResourceNameLen - sizeof(USHORT));
|
|
wcscpy(Ptr, BinaryMofInstanceSet->IsStaticNames->StaticNamePtr[i]);
|
|
} else if (BinaryMofInstanceSet->Flags & IS_INSTANCE_BASENAME) {
|
|
*Ptr = (USHORT)swprintf(Ptr+1,
|
|
L"%ws%d",
|
|
BinaryMofInstanceSet->IsBaseName->BaseName,
|
|
BinaryMofInstanceSet->IsBaseName->BaseIndex+i) * sizeof(WCHAR);
|
|
}
|
|
|
|
WmipProcessEvent((PWNODE_HEADER)Wnode, TRUE, FALSE);
|
|
WmipFree(Wnode);
|
|
}
|
|
}
|
|
}
|
|
|
|
void WmipGenerateMofResourceNotification(
|
|
LPWSTR ImagePath,
|
|
LPWSTR ResourceName,
|
|
LPCGUID Guid,
|
|
ULONG ActionCode
|
|
)
|
|
{
|
|
PWNODE_SINGLE_INSTANCE Wnode;
|
|
ULONG ImagePathLen, ResourceNameLen, InstanceNameLen, BufferSize;
|
|
PWCHAR Ptr;
|
|
|
|
PAGED_CODE();
|
|
|
|
ImagePathLen = (wcslen(ImagePath) + 2) * sizeof(WCHAR);
|
|
|
|
ResourceNameLen = (wcslen(ResourceName) + 2) * sizeof(WCHAR);
|
|
InstanceNameLen = ( sizeof(USHORT)+7 ) & ~7;
|
|
BufferSize = FIELD_OFFSET(WNODE_SINGLE_INSTANCE, VariableData) +
|
|
InstanceNameLen +
|
|
ImagePathLen +
|
|
ResourceNameLen;
|
|
|
|
Wnode = (PWNODE_SINGLE_INSTANCE)WmipAlloc(BufferSize);
|
|
if (Wnode != NULL)
|
|
{
|
|
Wnode->WnodeHeader.BufferSize = BufferSize;
|
|
Wnode->WnodeHeader.ProviderId = ActionCode;
|
|
Wnode->WnodeHeader.Version = 1;
|
|
Wnode->WnodeHeader.Linkage = 0;
|
|
Wnode->WnodeHeader.Flags = (WNODE_FLAG_EVENT_ITEM |
|
|
WNODE_FLAG_SINGLE_INSTANCE |
|
|
WNODE_FLAG_INTERNAL);
|
|
memcpy(&Wnode->WnodeHeader.Guid,
|
|
Guid,
|
|
sizeof(GUID));
|
|
WmiInsertTimestamp(&Wnode->WnodeHeader);
|
|
Wnode->OffsetInstanceName = FIELD_OFFSET(WNODE_SINGLE_INSTANCE,
|
|
VariableData);
|
|
Wnode->DataBlockOffset = Wnode->OffsetInstanceName + InstanceNameLen;
|
|
Wnode->SizeDataBlock = ImagePathLen + ResourceNameLen;
|
|
Ptr = (PWCHAR)&Wnode->VariableData;
|
|
|
|
*Ptr = 0; // Empty instance name
|
|
|
|
// ImagePath name
|
|
Ptr = (PWCHAR)OffsetToPtr(Wnode, Wnode->DataBlockOffset);
|
|
ImagePathLen -= sizeof(USHORT);
|
|
*Ptr++ = (USHORT)ImagePathLen;
|
|
memcpy(Ptr, ImagePath, ImagePathLen);
|
|
Ptr += (ImagePathLen / sizeof(WCHAR));
|
|
|
|
// MofResource Name
|
|
ResourceNameLen -= sizeof(USHORT);
|
|
*Ptr++ = (USHORT)ResourceNameLen;
|
|
memcpy(Ptr, ResourceName, ResourceNameLen);
|
|
|
|
WmipProcessEvent((PWNODE_HEADER)Wnode, TRUE, FALSE);
|
|
WmipFree(Wnode);
|
|
}
|
|
}
|
|
|
|
void WmipGenerateRegistrationNotification(
|
|
PBDATASOURCE DataSource,
|
|
NOTIFICATIONTYPES NotificationType
|
|
)
|
|
{
|
|
PTRCACHE *Guids;
|
|
ULONG GuidCount, GuidMax;
|
|
PLIST_ENTRY InstanceSetList;
|
|
PBINSTANCESET InstanceSet;
|
|
LPGUID Guid;
|
|
|
|
PAGED_CODE();
|
|
|
|
WmipReferenceDS(DataSource);
|
|
|
|
//
|
|
// Loop over all instance sets for this data source
|
|
//
|
|
GuidCount = 0;
|
|
GuidMax = 0;
|
|
Guids = NULL;
|
|
InstanceSetList = DataSource->ISHead.Flink;
|
|
while (InstanceSetList != &DataSource->ISHead)
|
|
{
|
|
|
|
InstanceSet = CONTAINING_RECORD(InstanceSetList,
|
|
INSTANCESET,
|
|
DSISList);
|
|
|
|
//
|
|
// Cache the guid and instance set so we can send registration
|
|
// change notifications
|
|
//
|
|
Guid = &InstanceSet->GuidEntry->Guid;
|
|
WmipCachePtrs(Guid,
|
|
InstanceSet,
|
|
&GuidCount,
|
|
&GuidMax,
|
|
&Guids);
|
|
|
|
//
|
|
// If we are adding a guid and it is already enabled then we
|
|
// need to send an enable irp. Likewise if the guid is being
|
|
// removed and is enabled then we need to send a disable
|
|
//
|
|
if (NotificationType == RegistrationAdd)
|
|
{
|
|
WmipEnableCollectionForNewGuid(Guid, InstanceSet);
|
|
} else if (NotificationType == RegistrationDelete) {
|
|
WmipDisableCollectionForRemovedGuid(Guid, InstanceSet);
|
|
}
|
|
|
|
//
|
|
// If this is a Trace Provider, then add the Unregistering Guids
|
|
// to the GuidMapList if a logger session is active.
|
|
// If there is a notification entry for this Guid, then we take
|
|
// it that there is a logger session active.
|
|
//
|
|
if ( (NotificationType == RegistrationDelete) &&
|
|
(InstanceSet->Flags & IS_TRACED) )
|
|
{
|
|
WmipSaveTraceGuidMap(Guid, InstanceSet);
|
|
}
|
|
|
|
InstanceSetList = InstanceSetList->Flink;
|
|
}
|
|
|
|
//
|
|
// Send out event that informs about guid registration changes
|
|
//
|
|
WmipSendGuidUpdateNotifications(NotificationType,
|
|
GuidCount,
|
|
Guids);
|
|
|
|
if (Guids != NULL)
|
|
{
|
|
WmipFree(Guids);
|
|
}
|
|
|
|
WmipUnreferenceDS(DataSource);
|
|
}
|
|
|
|
NTSTATUS WmipAddMofResource(
|
|
PBDATASOURCE DataSource,
|
|
LPWSTR ImagePath,
|
|
BOOLEAN IsImagePath,
|
|
LPWSTR MofResourceName,
|
|
PBOOLEAN NewMofResource
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will build MOFCLASSINFO structures for each guid that is
|
|
described in the MOF for the data source. If there are any errors in the
|
|
mof resource then no mof information from the resource is retained and the
|
|
resource data is unloaded.
|
|
|
|
Arguments:
|
|
|
|
DataSource is the data source structure of the data provider
|
|
|
|
ImagePath points at a string that has the full path to the image
|
|
file that contains the MOF resource
|
|
|
|
MofResourceName points at a string that has the name of the MOF
|
|
resource
|
|
|
|
Return Value:
|
|
|
|
|
|
--*/
|
|
{
|
|
PMOFRESOURCE MofResource;
|
|
ULONG NewMofResourceCount;
|
|
ULONG i;
|
|
BOOLEAN FreeBuffer;
|
|
|
|
PAGED_CODE();
|
|
|
|
MofResource = WmipFindMRByNames(ImagePath,
|
|
MofResourceName);
|
|
|
|
if (MofResource == NULL)
|
|
{
|
|
//
|
|
// Mof Resource not previously specified, so allocate a new one
|
|
MofResource = WmipAllocMofResource();
|
|
if (MofResource == NULL)
|
|
{
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
if (IsImagePath)
|
|
{
|
|
MofResource->Flags |= MR_FLAG_USER_MODE;
|
|
}
|
|
|
|
MofResource->RegistryPath = WmipAlloc((wcslen(ImagePath)+1) * sizeof(WCHAR));
|
|
MofResource->MofResourceName = WmipAlloc((wcslen(MofResourceName) + 1) * sizeof(WCHAR));
|
|
|
|
if ((MofResource->RegistryPath == NULL) ||
|
|
(MofResource->MofResourceName == NULL))
|
|
{
|
|
//
|
|
// Allocation cleanup routine will free any memory alloced for MR
|
|
WmipUnreferenceMR(MofResource);
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
wcscpy(MofResource->RegistryPath, ImagePath);
|
|
wcscpy(MofResource->MofResourceName, MofResourceName);
|
|
|
|
WmipEnterSMCritSection();
|
|
InsertTailList(WmipMRHeadPtr, &MofResource->MainMRList);
|
|
WmipLeaveSMCritSection();
|
|
*NewMofResource = TRUE;
|
|
} else {
|
|
*NewMofResource = FALSE;
|
|
}
|
|
|
|
if (DataSource != NULL)
|
|
{
|
|
WmipEnterSMCritSection();
|
|
for (i = 0; i < DataSource->MofResourceCount; i++)
|
|
{
|
|
if (DataSource->MofResources[i] == MofResource)
|
|
{
|
|
//
|
|
// If this mof resource is already been registered for
|
|
// this data source then we do not need to worry about
|
|
// it anymore.
|
|
//
|
|
WmipUnreferenceMR(MofResource);
|
|
break;
|
|
}
|
|
|
|
if (DataSource->MofResources[i] == NULL)
|
|
{
|
|
DataSource->MofResources[i] = MofResource;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == DataSource->MofResourceCount)
|
|
{
|
|
NewMofResourceCount = DataSource->MofResourceCount +
|
|
AVGMOFRESOURCECOUNT;
|
|
if (DataSource->MofResources !=
|
|
DataSource->StaticMofResources)
|
|
{
|
|
FreeBuffer = TRUE;
|
|
} else {
|
|
FreeBuffer = FALSE;
|
|
}
|
|
|
|
if (WmipRealloc((PVOID *)&DataSource->MofResources,
|
|
DataSource->MofResourceCount * sizeof(PMOFRESOURCE),
|
|
NewMofResourceCount * sizeof(PMOFRESOURCE),
|
|
FreeBuffer ) )
|
|
{
|
|
DataSource->MofResourceCount = NewMofResourceCount;
|
|
DataSource->MofResources[i] = MofResource;
|
|
}
|
|
}
|
|
WmipLeaveSMCritSection();
|
|
}
|
|
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
|
|
NTSTATUS WmipAddDataSource(
|
|
IN PREGENTRY RegEntry,
|
|
IN PWMIREGINFOW WmiRegInfo,
|
|
IN ULONG BufferSize,
|
|
IN PWCHAR RegPath,
|
|
IN PWCHAR ResourceName,
|
|
IN PWMIGUIDOBJECT RequestObject,
|
|
IN BOOLEAN IsUserMode
|
|
)
|
|
/*+++
|
|
|
|
Routine Description:
|
|
|
|
This routine will register a information in the WMI database for a
|
|
new DataSource or add additional guids to an existing data source.
|
|
|
|
Arguments:
|
|
|
|
RegEntry is the regentry for the data provider
|
|
|
|
WmiRegInfo is the registration information to register
|
|
|
|
BufferSize is the size of WmiRegInfo in bytes
|
|
|
|
RegPath is a pointer into WmiRegInfo to a counted string that is the
|
|
registry path (or image path for UM providers).
|
|
|
|
ResourceName is a pointer into WmiRegInfo to a counted string that is the
|
|
resource name
|
|
|
|
RequestObject is the request object associated with the UM provider.
|
|
If this is NULL then the registration is for a driver
|
|
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESS or an error code
|
|
|
|
---*/
|
|
{
|
|
PBDATASOURCE DataSource;
|
|
PWMIREGGUID RegGuid;
|
|
ULONG i;
|
|
NTSTATUS Status, Status2;
|
|
PBINSTANCESET InstanceSet;
|
|
PBINSTANCESET BinaryMofInstanceSet = NULL;
|
|
PWCHAR MofRegistryPath;
|
|
PWCHAR MofResourceName;
|
|
BOOLEAN AppendToDS;
|
|
BOOLEAN NewMofResource;
|
|
UCHAR WnodeBuffer[sizeof(WNODE_HEADER) + AVGGUIDSPERDS * sizeof(GUID)];
|
|
PWNODE_HEADER Wnode;
|
|
|
|
PAGED_CODE();
|
|
|
|
if (RegEntry->DataSource != NULL)
|
|
{
|
|
DataSource = RegEntry->DataSource;
|
|
WmipAssert(DataSource != NULL);
|
|
AppendToDS = TRUE;
|
|
} else {
|
|
DataSource = WmipAllocDataSource();
|
|
AppendToDS = FALSE;
|
|
}
|
|
|
|
if (DataSource != NULL)
|
|
{
|
|
//
|
|
// Loop over each guid being registered and build instance sets and
|
|
// guid entries.
|
|
//
|
|
if (! AppendToDS)
|
|
{
|
|
DataSource->ProviderId = RegEntry->ProviderId;
|
|
if (RequestObject != NULL)
|
|
{
|
|
DataSource->Flags |= DS_USER_MODE;
|
|
DataSource->RequestObject = RequestObject;
|
|
} else {
|
|
DataSource->Flags |= DS_KERNEL_MODE;
|
|
}
|
|
|
|
}
|
|
|
|
RegGuid = WmiRegInfo->WmiRegGuid;
|
|
|
|
|
|
for (i = 0; i < WmiRegInfo->GuidCount; i++, RegGuid++)
|
|
{
|
|
if (! (RegGuid->Flags & WMIREG_FLAG_REMOVE_GUID))
|
|
{
|
|
|
|
//
|
|
// Only trace control guids are registered. Trace transaction
|
|
// guids will not be registered since they can not be enabled or
|
|
// disabled individually. They will be kept on the ControlGuids'
|
|
// instance set structure.
|
|
//
|
|
|
|
if ( ( (RegGuid->Flags & WMIREG_FLAG_TRACED_GUID) != WMIREG_FLAG_TRACED_GUID ) ||
|
|
(RegGuid->Flags & WMIREG_FLAG_TRACE_CONTROL_GUID) )
|
|
{
|
|
|
|
//
|
|
// Allocate an instance set for this new set of instances
|
|
//
|
|
InstanceSet = WmipAllocInstanceSet();
|
|
if (InstanceSet == NULL)
|
|
{
|
|
WmipUnreferenceDS(DataSource);
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipAddDataSource: WmipAllocInstanceSet failed\n"));
|
|
return(STATUS_INSUFFICIENT_RESOURCES);
|
|
}
|
|
|
|
//
|
|
// We will allocate a proper guid entry for the instance
|
|
// set when the data source gets linked into the main data
|
|
// source list so we stash a pointer to the guid away now.
|
|
//
|
|
InstanceSet->GuidEntry = (PBGUIDENTRY)&RegGuid->Guid;
|
|
|
|
//
|
|
// Minimally initialize the InstanceSet and add it to
|
|
// the DataSource's list of InstanceSets. We do this
|
|
// first so that if there is any failure below and
|
|
// the DataSource can'e be fully registered the instance
|
|
// set and guid entry will be free when the DataSource is
|
|
// freed.
|
|
//
|
|
InstanceSet->DataSource = DataSource;
|
|
InstanceSet->Flags |= IS_NEWLY_REGISTERED;
|
|
|
|
Status = WmipBuildInstanceSet(RegGuid,
|
|
WmiRegInfo,
|
|
BufferSize,
|
|
InstanceSet,
|
|
RegEntry->ProviderId,
|
|
RegPath);
|
|
|
|
//
|
|
// If this is the guid that represents the binary mof data
|
|
// then remember the InstanceSet for later
|
|
//
|
|
if (IsEqualGUID(&RegGuid->Guid, &WmipBinaryMofGuid))
|
|
{
|
|
BinaryMofInstanceSet = InstanceSet;
|
|
}
|
|
|
|
|
|
InsertHeadList(&DataSource->ISHead, &InstanceSet->DSISList);
|
|
|
|
if (! NT_SUCCESS(Status))
|
|
{
|
|
WmipUnreferenceDS(DataSource);
|
|
return(Status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Now that the instance sets have been built successfully we
|
|
// can link them into the master list.
|
|
//
|
|
WmipEnterSMCritSection();
|
|
Status = WmipLinkDataSourceToList(DataSource, (BOOLEAN)(! AppendToDS));
|
|
WmipLeaveSMCritSection();
|
|
|
|
if (! NT_SUCCESS(Status))
|
|
{
|
|
WmipUnreferenceDS(DataSource);
|
|
return(Status);
|
|
}
|
|
|
|
RegEntry->DataSource = DataSource;
|
|
|
|
//
|
|
// We need to send out notification of new guids and mofs.
|
|
//
|
|
if (BinaryMofInstanceSet != NULL)
|
|
{
|
|
//
|
|
// Send binary mof guid arrival notification
|
|
//
|
|
WmipGenerateBinaryMofNotification(BinaryMofInstanceSet,
|
|
&GUID_MOF_RESOURCE_ADDED_NOTIFICATION);
|
|
|
|
}
|
|
|
|
//
|
|
// Convert Registry path to a sz string so we can assign it to
|
|
// the DS if the DS is a new one
|
|
//
|
|
if (RegPath != NULL)
|
|
{
|
|
MofRegistryPath = WmipCountedToSz(RegPath);
|
|
} else {
|
|
MofRegistryPath = NULL;
|
|
}
|
|
|
|
if ((AppendToDS == FALSE) && (MofRegistryPath != NULL))
|
|
{
|
|
DataSource->RegistryPath = MofRegistryPath;
|
|
}
|
|
|
|
if (ResourceName != NULL)
|
|
{
|
|
MofResourceName = WmipCountedToSz(ResourceName);
|
|
} else {
|
|
MofResourceName = NULL;
|
|
}
|
|
|
|
//
|
|
// Finally if we created a new data source we need to register
|
|
// the mof for it. Only register those that have a RegistryPath
|
|
// and a ResourceName
|
|
//
|
|
if ((MofRegistryPath != NULL) &&
|
|
(*MofRegistryPath != 0) &&
|
|
(MofResourceName != NULL) &&
|
|
(*MofResourceName != 0))
|
|
{
|
|
//
|
|
// If a mof is specified then add it to the list
|
|
//
|
|
Status2 = WmipAddMofResource(DataSource,
|
|
MofRegistryPath,
|
|
IsUserMode,
|
|
MofResourceName,
|
|
&NewMofResource);
|
|
|
|
if (NT_SUCCESS(Status2) && NewMofResource)
|
|
{
|
|
//
|
|
// We successfully added a brand new MOF resource so
|
|
// we need to fire an event for wbem.
|
|
//
|
|
WmipGenerateMofResourceNotification(MofRegistryPath,
|
|
MofResourceName,
|
|
&GUID_MOF_RESOURCE_ADDED_NOTIFICATION,
|
|
IsUserMode ?
|
|
MOFEVENT_ACTION_IMAGE_PATH :
|
|
MOFEVENT_ACTION_REGISTRY_PATH);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Clean up registry path and mof resource name strings
|
|
//
|
|
if ((MofRegistryPath != NULL) && AppendToDS)
|
|
{
|
|
//
|
|
// Only free if registry path not saved in DataSource
|
|
//
|
|
WmipAssert(MofRegistryPath != DataSource->RegistryPath);
|
|
WmipFree(MofRegistryPath);
|
|
}
|
|
|
|
if (MofResourceName != NULL)
|
|
{
|
|
WmipFree(MofResourceName);
|
|
}
|
|
|
|
//
|
|
// Send a notification about new/changed guids
|
|
//
|
|
WmipGenerateRegistrationNotification(DataSource,
|
|
RegistrationAdd);
|
|
|
|
} else {
|
|
Status = STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
return(Status);
|
|
}
|
|
|
|
|
|
PBINSTANCESET WmipFindISInDSByGuid(
|
|
PBDATASOURCE DataSource,
|
|
LPGUID Guid
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will find the InstanceSet in the passed DataSource for the
|
|
guid passed.
|
|
|
|
This routine assumes that the SM critical section is held before it is
|
|
called.
|
|
|
|
Arguments:
|
|
|
|
DataSource is the data source from which the guid is to be removed
|
|
|
|
Guid has the Guid for the InstanceSet to find
|
|
|
|
Return Value:
|
|
|
|
--*/
|
|
{
|
|
PLIST_ENTRY InstanceSetList;
|
|
PBINSTANCESET InstanceSet;
|
|
|
|
PAGED_CODE();
|
|
|
|
InstanceSetList = DataSource->ISHead.Flink;
|
|
while (InstanceSetList != &DataSource->ISHead)
|
|
{
|
|
InstanceSet = CONTAINING_RECORD(InstanceSetList,
|
|
INSTANCESET,
|
|
DSISList);
|
|
|
|
if ((InstanceSet->GuidEntry != NULL) &&
|
|
(IsEqualGUID(Guid, &InstanceSet->GuidEntry->Guid)))
|
|
{
|
|
WmipReferenceIS(InstanceSet);
|
|
return(InstanceSet);
|
|
}
|
|
|
|
InstanceSetList = InstanceSetList->Flink;
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
ULONG WmipUpdateAddGuid(
|
|
PBDATASOURCE DataSource,
|
|
PWMIREGGUID RegGuid,
|
|
PWMIREGINFO WmiRegInfo,
|
|
ULONG BufferSize,
|
|
PBINSTANCESET *AddModInstanceSet
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will add a new guid for the data source and send notification
|
|
|
|
This routine assumes that the SM critical section is held before it is
|
|
called.
|
|
|
|
Arguments:
|
|
|
|
DataSource is the data source from which the guid is to be removed
|
|
|
|
RegGuid has the Guid update data structure
|
|
|
|
WmiRegInfo points at the beginning of the registration update info
|
|
|
|
Return Value:
|
|
|
|
1 if guid was added or 0
|
|
|
|
--*/
|
|
{
|
|
PBINSTANCESET InstanceSet;
|
|
LPGUID Guid = &RegGuid->Guid;
|
|
NTSTATUS Status;
|
|
|
|
PAGED_CODE();
|
|
|
|
//
|
|
// Allocate an instance set for this new set of instances
|
|
InstanceSet = WmipAllocInstanceSet();
|
|
if (InstanceSet == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: WmipUpdateAddGuid: WmipAllocInstanceSet failed\n"));
|
|
return(0);
|
|
}
|
|
|
|
//
|
|
// We will allocate a proper guid entry for the instance set when
|
|
// the data source gets linked into the main data source list so
|
|
// we stash a pointer to the guid away now.
|
|
InstanceSet->GuidEntry = (PBGUIDENTRY)Guid;
|
|
|
|
//
|
|
// Minimally initialize the InstanceSet and add it to the DataSource's
|
|
// list of InstanceSets. We do this first so that if there is any
|
|
// failure below and the DataSource can'e be fully registered the
|
|
// instance set and guid entry will be free when the DataSource is
|
|
// freed.
|
|
InstanceSet->DataSource = DataSource;
|
|
InstanceSet->Flags |= IS_NEWLY_REGISTERED;
|
|
|
|
InsertHeadList(&DataSource->ISHead, &InstanceSet->DSISList);
|
|
|
|
Status = WmipBuildInstanceSet(RegGuid,
|
|
WmiRegInfo,
|
|
BufferSize,
|
|
InstanceSet,
|
|
DataSource->ProviderId,
|
|
DataSource->RegistryPath);
|
|
|
|
if (! NT_SUCCESS(Status))
|
|
{
|
|
WmipUnreferenceIS(InstanceSet);
|
|
return(0);
|
|
}
|
|
|
|
Status = WmipLinkDataSourceToList(DataSource,
|
|
FALSE);
|
|
|
|
*AddModInstanceSet = InstanceSet;
|
|
|
|
return( NT_SUCCESS(Status) ? 1 : 0);
|
|
}
|
|
|
|
#if DBG
|
|
PTCHAR GuidToString(
|
|
PTCHAR s,
|
|
LPGUID piid
|
|
)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
swprintf(s, TEXT("%x-%x-%x-%x%x%x%x%x%x%x%x"),
|
|
piid->Data1, piid->Data2,
|
|
piid->Data3,
|
|
piid->Data4[0], piid->Data4[1],
|
|
piid->Data4[2], piid->Data4[3],
|
|
piid->Data4[4], piid->Data4[5],
|
|
piid->Data4[6], piid->Data4[7]);
|
|
|
|
return(s);
|
|
}
|
|
#endif
|
|
|
|
|
|
BOOLEAN WmipUpdateRemoveGuid(
|
|
PBDATASOURCE DataSource,
|
|
PWMIREGGUID RegGuid,
|
|
PBINSTANCESET *AddModInstanceSet
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will remove the guid for the data source and send notification
|
|
|
|
This routine assumes that the SM critical section is held before it is
|
|
called.
|
|
|
|
Arguments:
|
|
|
|
DataSource is the data source from which the guid is to be removed
|
|
|
|
RegGuid has the Guid update data structure
|
|
|
|
Return Value:
|
|
|
|
TRUE if guid was removed else FALSE
|
|
|
|
--*/
|
|
{
|
|
PBINSTANCESET InstanceSet;
|
|
LPGUID Guid = &RegGuid->Guid;
|
|
BOOLEAN SendNotification;
|
|
|
|
PAGED_CODE();
|
|
|
|
InstanceSet = WmipFindISInDSByGuid(DataSource,
|
|
Guid);
|
|
if (InstanceSet != NULL)
|
|
{
|
|
WmipUnreferenceIS(InstanceSet);
|
|
*AddModInstanceSet = InstanceSet;
|
|
SendNotification = TRUE;
|
|
} else {
|
|
#if DBG
|
|
TCHAR s[256];
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: UpdateRemoveGuid %ws not registered by %ws\n",
|
|
GuidToString(s, Guid), DataSource->RegistryPath));
|
|
#endif
|
|
SendNotification = FALSE;
|
|
}
|
|
return(SendNotification);
|
|
}
|
|
|
|
|
|
BOOLEAN WmipIsEqualInstanceSets(
|
|
PBINSTANCESET InstanceSet1,
|
|
PBINSTANCESET InstanceSet2
|
|
)
|
|
{
|
|
ULONG i;
|
|
ULONG Flags1, Flags2;
|
|
|
|
PAGED_CODE();
|
|
|
|
Flags1 = InstanceSet1->Flags & ~(IS_ENABLE_EVENT | IS_ENABLE_COLLECTION);
|
|
Flags2 = InstanceSet2->Flags & ~(IS_ENABLE_EVENT | IS_ENABLE_COLLECTION);
|
|
if (Flags1 == Flags2)
|
|
{
|
|
if (InstanceSet1->Flags & IS_INSTANCE_BASENAME)
|
|
{
|
|
if ((InstanceSet1->Count == InstanceSet2->Count) &&
|
|
(wcscmp(InstanceSet1->IsBaseName->BaseName,
|
|
InstanceSet1->IsBaseName->BaseName) == 0))
|
|
{
|
|
return(TRUE);
|
|
}
|
|
} else if (InstanceSet1->Flags & IS_INSTANCE_BASENAME) {
|
|
if (InstanceSet1->Count == InstanceSet2->Count)
|
|
{
|
|
for (i = 0; i < InstanceSet1->Count; i++)
|
|
{
|
|
if (wcscmp(InstanceSet1->IsStaticNames->StaticNamePtr[i],
|
|
InstanceSet2->IsStaticNames->StaticNamePtr[i]) != 0)
|
|
{
|
|
return(FALSE);
|
|
}
|
|
}
|
|
return(TRUE);
|
|
}
|
|
} else {
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
return(FALSE);
|
|
|
|
}
|
|
|
|
ULONG WmipUpdateModifyGuid(
|
|
PBDATASOURCE DataSource,
|
|
PWMIREGGUID RegGuid,
|
|
PWMIREGINFO WmiRegInfo,
|
|
ULONG BufferSize,
|
|
PBINSTANCESET *AddModInstanceSet
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will modify an existing guid for the data source and
|
|
send notification
|
|
|
|
This routine assumes that the SM critical section is held before it is
|
|
called.
|
|
|
|
|
|
HEHEY: If a guid was opened when it was registered as cheap, but closed
|
|
when the guid was registered expensive a disable collection will
|
|
NOT be sent. Conversely if a guid was opened when it was
|
|
registered as expensive and is closed when registed as cheap a
|
|
disable collection may be sent.
|
|
|
|
Arguments:
|
|
|
|
DataSource is the data source from which the guid is to be removed
|
|
|
|
RegGuid has the Guid update data structure
|
|
|
|
WmiRegInfo points at the beginning of the registration update info
|
|
|
|
Return Value:
|
|
|
|
1 if guid was added or 2 if guid was modified else 0
|
|
|
|
--*/
|
|
{
|
|
PBINSTANCESET InstanceSet;
|
|
LPGUID Guid = &RegGuid->Guid;
|
|
ULONG SendNotification;
|
|
PBINSTANCESET InstanceSetNew;
|
|
PVOID ToFree;
|
|
NTSTATUS Status;
|
|
|
|
PAGED_CODE();
|
|
|
|
InstanceSet = WmipFindISInDSByGuid(DataSource,
|
|
Guid);
|
|
if (InstanceSet != NULL)
|
|
{
|
|
//
|
|
// See if anything has changed with the instance names and if not
|
|
// then don't bother to recreate the instance set
|
|
|
|
InstanceSetNew = WmipAllocInstanceSet();
|
|
if (InstanceSetNew == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: UpdateModifyGuid Not enough memory to alloc InstanceSet\n"));
|
|
WmipUnreferenceIS(InstanceSet);
|
|
return(0);
|
|
}
|
|
|
|
Status = WmipBuildInstanceSet(RegGuid,
|
|
WmiRegInfo,
|
|
BufferSize,
|
|
InstanceSetNew,
|
|
DataSource->ProviderId,
|
|
DataSource->RegistryPath);
|
|
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
if (! WmipIsEqualInstanceSets(InstanceSet,
|
|
InstanceSetNew))
|
|
{
|
|
ToFree = NULL;
|
|
if (InstanceSet->IsBaseName != NULL) {
|
|
ToFree = (PVOID)InstanceSet->IsBaseName;
|
|
}
|
|
|
|
RemoveEntryList(&InstanceSet->GuidISList);
|
|
Status = WmipBuildInstanceSet(RegGuid,
|
|
WmiRegInfo,
|
|
BufferSize,
|
|
InstanceSet,
|
|
DataSource->ProviderId,
|
|
DataSource->RegistryPath);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
InsertHeadList(&InstanceSet->GuidEntry->ISHead,
|
|
&InstanceSet->GuidISList);
|
|
} else {
|
|
//
|
|
// It is sad, but we weren't able to rebuild the instance
|
|
// set so the old one is gone. This is an unlikely
|
|
// situation that can really only occur when the machine
|
|
// is out of memory.
|
|
//
|
|
}
|
|
|
|
if (ToFree != NULL)
|
|
{
|
|
WmipFree(ToFree);
|
|
}
|
|
|
|
*AddModInstanceSet = InstanceSet;
|
|
SendNotification = 2;
|
|
} else {
|
|
//
|
|
// The InstanceSets are identical so just delete the new one
|
|
SendNotification = 0;
|
|
}
|
|
|
|
WmipUnreferenceIS(InstanceSetNew);
|
|
WmipUnreferenceIS(InstanceSet);
|
|
} else {
|
|
//
|
|
// We could not parse the new instance set so leave the old
|
|
// one alone
|
|
//
|
|
WmipUnreferenceIS(InstanceSet);
|
|
WmipUnreferenceIS(InstanceSetNew);
|
|
SendNotification = FALSE;
|
|
}
|
|
} else {
|
|
//
|
|
// Guid not already registered so try to add it
|
|
SendNotification = WmipUpdateAddGuid(DataSource,
|
|
RegGuid,
|
|
WmiRegInfo,
|
|
BufferSize,
|
|
AddModInstanceSet);
|
|
}
|
|
return(SendNotification);
|
|
}
|
|
|
|
|
|
void WmipCachePtrs(
|
|
LPGUID Ptr1,
|
|
PBINSTANCESET Ptr2,
|
|
ULONG *PtrCount,
|
|
ULONG *PtrMax,
|
|
PTRCACHE **PtrArray
|
|
)
|
|
{
|
|
PTRCACHE *NewPtrArray;
|
|
PTRCACHE *OldPtrArray;
|
|
PTRCACHE *ActualPtrArray;
|
|
|
|
PAGED_CODE();
|
|
|
|
if (*PtrCount == *PtrMax)
|
|
{
|
|
NewPtrArray = WmipAlloc((*PtrMax + PTRCACHEGROWSIZE) * sizeof(PTRCACHE));
|
|
if (NewPtrArray != NULL)
|
|
{
|
|
OldPtrArray = *PtrArray;
|
|
memcpy(NewPtrArray, OldPtrArray, *PtrMax * sizeof(PTRCACHE));
|
|
*PtrMax += PTRCACHEGROWSIZE;
|
|
if (*PtrArray != NULL)
|
|
{
|
|
WmipFree(*PtrArray);
|
|
}
|
|
*PtrArray = NewPtrArray;
|
|
} else {
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: Couldn't alloc memory for pointer cache\n"));
|
|
return;
|
|
}
|
|
}
|
|
ActualPtrArray = *PtrArray;
|
|
ActualPtrArray[*PtrCount].Guid = Ptr1;
|
|
ActualPtrArray[*PtrCount].InstanceSet = Ptr2;
|
|
(*PtrCount)++;
|
|
}
|
|
|
|
|
|
|
|
NTSTATUS WmipUpdateDataSource(
|
|
PREGENTRY RegEntry,
|
|
PWMIREGINFOW WmiRegInfo,
|
|
ULONG RetSize
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will update a data source with changes to already registered
|
|
guids.
|
|
|
|
Arguments:
|
|
|
|
ProviderId is the provider id of the DataSource whose guids are being
|
|
updated.
|
|
|
|
WmiRegInfo has the registration update information
|
|
|
|
RetSize has the size of the registration information returned from
|
|
kernel mode.
|
|
|
|
Return Value:
|
|
|
|
|
|
--*/
|
|
{
|
|
PBDATASOURCE DataSource;
|
|
PUCHAR RegInfo;
|
|
ULONG RetSizeLeft;
|
|
ULONG i;
|
|
PWMIREGGUID RegGuid;
|
|
ULONG NextWmiRegInfo;
|
|
PTRCACHE *RemovedGuids;
|
|
PTRCACHE *AddedGuids;
|
|
PTRCACHE *ModifiedGuids;
|
|
ULONG RemovedGuidCount;
|
|
ULONG AddedGuidCount;
|
|
ULONG ModifiedGuidCount;
|
|
ULONG RemovedGuidMax;
|
|
ULONG AddedGuidMax;
|
|
ULONG ModifiedGuidMax;
|
|
PBINSTANCESET InstanceSet;
|
|
ULONG Action;
|
|
|
|
PAGED_CODE();
|
|
|
|
DataSource = RegEntry->DataSource;
|
|
if (DataSource == NULL)
|
|
{
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: RegEntry %p requested update but is not registered\n",
|
|
RegEntry));
|
|
return(STATUS_OBJECT_NAME_NOT_FOUND);
|
|
}
|
|
|
|
WmipReferenceDS(DataSource);
|
|
AddedGuidCount = 0;
|
|
ModifiedGuidCount = 0;
|
|
RemovedGuidCount = 0;
|
|
AddedGuidMax = 0;
|
|
ModifiedGuidMax = 0;
|
|
RemovedGuidMax = 0;
|
|
ModifiedGuids = NULL;
|
|
AddedGuids = NULL;
|
|
RemovedGuids = NULL;
|
|
|
|
NextWmiRegInfo = 0;
|
|
RetSizeLeft = RetSize;
|
|
WmipEnterSMCritSection();
|
|
RegInfo = (PUCHAR)WmiRegInfo;
|
|
for (i = 0; i < WmiRegInfo->GuidCount; i++)
|
|
{
|
|
RegGuid = &WmiRegInfo->WmiRegGuid[i];
|
|
if (RegGuid->Flags & WMIREG_FLAG_REMOVE_GUID)
|
|
{
|
|
if (WmipUpdateRemoveGuid(DataSource,
|
|
RegGuid,
|
|
&InstanceSet))
|
|
{
|
|
WmipCachePtrs(&RegGuid->Guid,
|
|
InstanceSet,
|
|
&RemovedGuidCount,
|
|
&RemovedGuidMax,
|
|
&RemovedGuids);
|
|
}
|
|
} else {
|
|
Action = WmipUpdateModifyGuid(DataSource,
|
|
RegGuid,
|
|
WmiRegInfo,
|
|
RetSize,
|
|
&InstanceSet);
|
|
if (Action == 1)
|
|
{
|
|
WmipCachePtrs(&RegGuid->Guid,
|
|
InstanceSet,
|
|
&AddedGuidCount,
|
|
&AddedGuidMax,
|
|
&AddedGuids);
|
|
|
|
} else if (Action == 2) {
|
|
WmipCachePtrs(&RegGuid->Guid,
|
|
InstanceSet,
|
|
&ModifiedGuidCount,
|
|
&ModifiedGuidMax,
|
|
&ModifiedGuids);
|
|
}
|
|
}
|
|
}
|
|
WmipLeaveSMCritSection();
|
|
|
|
WmipUnreferenceDS(DataSource);
|
|
|
|
if (RemovedGuidCount > 0)
|
|
{
|
|
for (i = 0; i < RemovedGuidCount; i++)
|
|
{
|
|
if (IsEqualGUID(RemovedGuids[i].Guid,
|
|
&WmipBinaryMofGuid))
|
|
{
|
|
WmipGenerateBinaryMofNotification(RemovedGuids[i].InstanceSet,
|
|
&GUID_MOF_RESOURCE_REMOVED_NOTIFICATION);
|
|
}
|
|
|
|
InstanceSet = RemovedGuids[i].InstanceSet;
|
|
|
|
WmipDisableCollectionForRemovedGuid(RemovedGuids[i].Guid,
|
|
InstanceSet);
|
|
|
|
WmipEnterSMCritSection();
|
|
//
|
|
// If IS is on the GE list then remove it
|
|
if (InstanceSet->GuidISList.Flink != NULL)
|
|
{
|
|
RemoveEntryList(&InstanceSet->GuidISList);
|
|
InstanceSet->GuidEntry->ISCount--;
|
|
}
|
|
|
|
if (! (InstanceSet->Flags & IS_NEWLY_REGISTERED))
|
|
{
|
|
WmipUnreferenceGE(InstanceSet->GuidEntry);
|
|
}
|
|
|
|
InstanceSet->GuidEntry = NULL;
|
|
|
|
//
|
|
// Remove IS from the DS List
|
|
RemoveEntryList(&InstanceSet->DSISList);
|
|
WmipUnreferenceIS(InstanceSet);
|
|
WmipLeaveSMCritSection();
|
|
}
|
|
|
|
WmipSendGuidUpdateNotifications(RegistrationDelete,
|
|
RemovedGuidCount,
|
|
RemovedGuids);
|
|
WmipFree(RemovedGuids);
|
|
}
|
|
|
|
if (ModifiedGuidCount > 0)
|
|
{
|
|
for (i = 0; i < ModifiedGuidCount; i++)
|
|
{
|
|
if (IsEqualGUID(ModifiedGuids[i].Guid,
|
|
&WmipBinaryMofGuid))
|
|
{
|
|
WmipGenerateBinaryMofNotification(ModifiedGuids[i].InstanceSet,
|
|
&GUID_MOF_RESOURCE_ADDED_NOTIFICATION);
|
|
}
|
|
}
|
|
|
|
WmipSendGuidUpdateNotifications(RegistrationUpdate,
|
|
ModifiedGuidCount,
|
|
ModifiedGuids);
|
|
WmipFree(ModifiedGuids);
|
|
}
|
|
|
|
if (AddedGuidCount > 0)
|
|
{
|
|
for (i = 0; i < AddedGuidCount; i++)
|
|
{
|
|
if (IsEqualGUID(AddedGuids[i].Guid,
|
|
&WmipBinaryMofGuid))
|
|
{
|
|
WmipGenerateBinaryMofNotification(AddedGuids[i].InstanceSet,
|
|
&GUID_MOF_RESOURCE_ADDED_NOTIFICATION);
|
|
}
|
|
|
|
WmipEnableCollectionForNewGuid(AddedGuids[i].Guid,
|
|
AddedGuids[i].InstanceSet);
|
|
}
|
|
WmipSendGuidUpdateNotifications(RegistrationAdd,
|
|
AddedGuidCount,
|
|
AddedGuids);
|
|
WmipFree(AddedGuids);
|
|
}
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
void WmipRemoveDataSourceByDS(
|
|
PBDATASOURCE DataSource
|
|
)
|
|
{
|
|
|
|
PAGED_CODE();
|
|
|
|
WmipGenerateRegistrationNotification(DataSource,
|
|
RegistrationDelete);
|
|
|
|
WmipUnreferenceDS(DataSource);
|
|
}
|
|
|
|
NTSTATUS WmipRemoveDataSource(
|
|
PREGENTRY RegEntry
|
|
)
|
|
{
|
|
PBDATASOURCE DataSource;
|
|
NTSTATUS Status;
|
|
|
|
PAGED_CODE();
|
|
|
|
DataSource = RegEntry->DataSource;
|
|
if (DataSource != NULL)
|
|
{
|
|
WmipReferenceDS(DataSource);
|
|
WmipRemoveDataSourceByDS(DataSource);
|
|
WmipUnreferenceDS(DataSource);
|
|
Status = STATUS_SUCCESS;
|
|
} else {
|
|
WmipDebugPrintEx((DPFLTR_WMICORE_ID, DPFLTR_INFO_LEVEL,"WMI: Attempt to remove non existant data source %p\n",
|
|
RegEntry));
|
|
Status = STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
return(Status);
|
|
}
|
|
|
|
|
|
NTSTATUS WmipEnumerateMofResources(
|
|
PWMIMOFLIST MofList,
|
|
ULONG BufferSize,
|
|
ULONG *RetSize
|
|
)
|
|
{
|
|
PLIST_ENTRY MofResourceList;
|
|
PMOFRESOURCE MofResource;
|
|
ULONG MRCount;
|
|
ULONG SizeNeeded, MRSize;
|
|
PWMIMOFENTRY MofEntry;
|
|
PWCHAR MRBuffer;
|
|
ULONG i;
|
|
|
|
PAGED_CODE();
|
|
|
|
WmipEnterSMCritSection();
|
|
|
|
MRCount = 0;
|
|
SizeNeeded = 0;
|
|
MofResourceList = WmipMRHeadPtr->Flink;
|
|
while (MofResourceList != WmipMRHeadPtr)
|
|
{
|
|
MofResource = CONTAINING_RECORD(MofResourceList,
|
|
MOFRESOURCE,
|
|
MainMRList);
|
|
|
|
MRCount++;
|
|
SizeNeeded += (wcslen(MofResource->RegistryPath) +
|
|
wcslen(MofResource->MofResourceName) + 2) *
|
|
sizeof(WCHAR);
|
|
|
|
MofResourceList = MofResourceList->Flink;
|
|
}
|
|
|
|
if (MRCount != 0)
|
|
{
|
|
MRSize = sizeof(WMIMOFLIST) + ((MRCount-1) * sizeof(WMIMOFENTRY));
|
|
SizeNeeded += MRSize;
|
|
|
|
if (BufferSize >= SizeNeeded)
|
|
{
|
|
MofList->MofListCount = MRCount;
|
|
MofResourceList = WmipMRHeadPtr->Flink;
|
|
i = 0;
|
|
while (MofResourceList != WmipMRHeadPtr)
|
|
{
|
|
MofResource = CONTAINING_RECORD(MofResourceList,
|
|
MOFRESOURCE,
|
|
MainMRList);
|
|
|
|
MofEntry = &MofList->MofEntry[i++];
|
|
MofEntry->Flags = MofResource->Flags & MR_FLAG_USER_MODE ?
|
|
WMIMOFENTRY_FLAG_USERMODE :
|
|
0;
|
|
|
|
MofEntry->RegPathOffset = MRSize;
|
|
MRBuffer = (PWCHAR)OffsetToPtr(MofList, MRSize);
|
|
wcscpy(MRBuffer, MofResource->RegistryPath);
|
|
MRSize += (wcslen(MofResource->RegistryPath) + 1) * sizeof(WCHAR);
|
|
|
|
MofEntry->ResourceOffset = MRSize;
|
|
MRBuffer = (PWCHAR)OffsetToPtr(MofList, MRSize);
|
|
wcscpy(MRBuffer, MofResource->MofResourceName);
|
|
MRSize += (wcslen(MofResource->MofResourceName) + 1) * sizeof(WCHAR);
|
|
MofResourceList = MofResourceList->Flink;
|
|
}
|
|
} else {
|
|
//
|
|
// Buffer not large enough, return size needed
|
|
//
|
|
MofList->MofListCount = SizeNeeded;
|
|
*RetSize = sizeof(ULONG);
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// No mof resources
|
|
//
|
|
MofList->MofListCount = 0;
|
|
*RetSize = sizeof(WMIMOFLIST);
|
|
}
|
|
|
|
|
|
WmipLeaveSMCritSection();
|
|
return(STATUS_SUCCESS);
|
|
}
|
|
|
|
|
|
NTSTATUS WmipInitializeDataStructs(
|
|
void
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will do the work of initializing the WMI service
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
Error status value
|
|
|
|
--*/
|
|
{
|
|
ULONG Status;
|
|
UCHAR RegInfoBuffer[sizeof(WMIREGINFOW) + 2 * sizeof(WMIREGGUIDW)];
|
|
PWMIREGINFOW RegInfo = (PWMIREGINFOW)RegInfoBuffer;
|
|
GUID InstanceInfoGuid = INSTANCE_INFO_GUID;
|
|
GUID EnumerateGuidsGuid = ENUMERATE_GUIDS_GUID;
|
|
PREGENTRY RegEntry;
|
|
PDEVICE_OBJECT Callback;
|
|
PLIST_ENTRY GuidEntryList;
|
|
PBGUIDENTRY GuidEntry;
|
|
BOOLEAN NewResource;
|
|
|
|
PAGED_CODE();
|
|
|
|
//
|
|
// Initialize the various data structure lists that we maintain
|
|
//
|
|
WmipDSHeadPtr = &WmipDSHead;
|
|
InitializeListHead(WmipDSHeadPtr);
|
|
InitializeListHead(&WmipDSChunkInfo.ChunkHead);
|
|
|
|
WmipGEHeadPtr = &WmipGEHead;
|
|
InitializeListHead(WmipGEHeadPtr);
|
|
InitializeListHead(&WmipGEChunkInfo.ChunkHead);
|
|
|
|
WmipMRHeadPtr = &WmipMRHead;
|
|
InitializeListHead(WmipMRHeadPtr);
|
|
InitializeListHead(&WmipMRChunkInfo.ChunkHead);
|
|
|
|
InitializeListHead(&WmipISChunkInfo.ChunkHead);
|
|
|
|
WmipGMHeadPtr = &WmipGMHead;
|
|
InitializeListHead(WmipGMHeadPtr);
|
|
|
|
|
|
//
|
|
// Register any internal data provider guids and mark them as such
|
|
//
|
|
Callback = (PDEVICE_OBJECT)WmipUMProviderCallback;
|
|
|
|
//
|
|
// Establish a regentry for the data provider
|
|
//
|
|
RegEntry = WmipAllocRegEntry(Callback,
|
|
WMIREG_FLAG_CALLBACK |
|
|
REGENTRY_FLAG_TRACED |
|
|
REGENTRY_FLAG_NEWREGINFO |
|
|
REGENTRY_FLAG_INUSE |
|
|
REGENTRY_FLAG_REG_IN_PROGRESS);
|
|
|
|
if (RegEntry != NULL)
|
|
{
|
|
//
|
|
// This code assumes that no other data providers have
|
|
// yet registered.
|
|
//
|
|
WmipAssert(WmipGEHeadPtr->Flink == WmipGEHeadPtr);
|
|
|
|
RtlZeroMemory(RegInfo, sizeof(RegInfoBuffer));
|
|
RegInfo->BufferSize = sizeof(RegInfoBuffer);
|
|
RegInfo->GuidCount = 2;
|
|
RegInfo->WmiRegGuid[0].Guid = InstanceInfoGuid;
|
|
RegInfo->WmiRegGuid[1].Guid = EnumerateGuidsGuid;
|
|
Status = WmipAddDataSource(RegEntry,
|
|
RegInfo,
|
|
RegInfo->BufferSize,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
FALSE);
|
|
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
GuidEntryList = WmipGEHeadPtr->Flink;
|
|
while (GuidEntryList != WmipGEHeadPtr)
|
|
{
|
|
GuidEntry = CONTAINING_RECORD(GuidEntryList,
|
|
GUIDENTRY,
|
|
MainGEList);
|
|
|
|
GuidEntry->Flags |= GE_FLAG_INTERNAL;
|
|
|
|
GuidEntryList = GuidEntryList->Flink;
|
|
}
|
|
} else {
|
|
RegEntry->Flags |= (REGENTRY_FLAG_RUNDOWN |
|
|
REGENTRY_FLAG_NOT_ACCEPTING_IRPS);
|
|
WmipUnreferenceRegEntry(RegEntry);
|
|
}
|
|
}
|
|
|
|
Status = WmipAddMofResource(RegEntry->DataSource,
|
|
WMICOREIMAGEPATH,
|
|
TRUE,
|
|
WMICORERESOURCENAME,
|
|
&NewResource);
|
|
WmipAssert(NewResource);
|
|
|
|
return(STATUS_SUCCESS);
|
|
}
|